blossom bush crataegus England english flower flowering plant Great Britain green hawthorn natural nature plant rose family shrub spring Surrey tree white Alice Springs arid Australia blooms blue branches brown central-Australia clear-sky contrast curly desert-country desert-region dry flowering flowers foliage hardy hot inland leaf leaves outback red scrub shrubbery shrubs sky sunlight sunshine terrain textures thick trees vegetation Davidia involucrata dove garden handkerchief petals woodland Cornus Dogwood elegant simple Acer pseudoplatanus Sussex sycamore Australian coral tree brittle branches color colored colorful colors colour coloured colourful colours curved petals deciduous dicotyledonous erythrina erythrina x sykesii fabaceae finger-like flora hybrid invasive long petals non-seeding perennial pest scarlet flowers sterile hybrid tall tree thorny tolerant tri-foliolate tubular petals upward-pointing radial pattern vigorous vigorously growing tree weed magnolia pink